Purification apparatus for compressed air

摘要

A compressed air purification apparatus includes a cover, an outer drum configured such that compressed air supplied through the inlet swirls downwards between the cover and the outer drum, a discharge pipe inserted into the insertion port to couple the outer drum to the cover, an inner drum configured such that the downwardly swirling compressed air flows upwards between the outer drum and the inner drum and again swirls downwards between the discharge pipe and the inner drum, a collector drum formed in an integrated manner with the inner drum, and a drain cover configured such that impurities separated from the compressed air are collected therein. The compressed air can separate water, oil and minute foreign substances from compressed air by rotating compressed air two times in a double cyclone.